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| 超濾膜設(shè)備 Ultrafilteration Membrane Equipments |
超濾是介于微濾和納濾之間的一種膜過濾，它在實(shí)際應(yīng)用中一般以截留分子量表征，主要用于將溶液中的大分子、膠體和微粒與溶劑等小分子物質(zhì)進(jìn)行分離。目前，超濾的應(yīng)用領(lǐng)域主要涉及食品、飲料、生物醫(yī)藥、精細(xì)化工、工業(yè)廢水處理與回用等。
超濾膜的應(yīng)用
在我國，超濾技術(shù)的應(yīng)用在果汁澄清工藝中已占有主導(dǎo)地位。新壓榨出的果汁中含有果膠、果肉碎屑、淀粉、蛋白、固體懸浮物、微生物代謝等多種致使果汁渾濁的物質(zhì)。
采用超濾對(duì)果汁進(jìn)行澄清，可使其中的糖類、有機(jī)酸和水等小分子透過膜，而截留其中多數(shù)大分子物質(zhì)，得到澄清無菌的果汁；超濾過程無須助濾劑、澄清劑；工藝過程短，人工費(fèi)用低；是較為經(jīng)濟(jì)有效的果汁澄清方法。
工業(yè)生產(chǎn)的酶制劑一般要進(jìn)行分離提純，傳統(tǒng)真空蒸發(fā)、溶劑萃取等方法存在著諸多弊端。
現(xiàn)在采用超濾技術(shù)進(jìn)行酶制劑的分離濃縮，則可在常溫下操作，克服熱對(duì)發(fā)酵產(chǎn)品品質(zhì)的影響；除去其中的小分子雜質(zhì)，保證濾液的純凈度和品質(zhì)的良好性；過濾過程無相變，能耗和成本較傳統(tǒng)方法都低；設(shè)備運(yùn)行簡便，易于操作和控制，因而很快成為了生物制藥等行業(yè)分離濃縮工藝的。
Ultrafilteration is a membrane filteration between microfilteration and nano filteration , it is characterized by the trapped molecular weight,mainly applied in separating the macromolecule, colloid ,ａnd fine particles with micromolecule substances such as dissolvent in the solution. At present ,the application of the ultrafilteration involves in food, drink, biology and medicine ,refine chemical engineering , industrial sewage treatment and reclamation.
Application of ultrafilteration membrane
In China, the application of the ultrafilteration has taken a leading role in juice clarification . Newly squeezed juice contains various substances that lead to the turbidity of the juice, such as pectin, pulp debris, starch , protein ,solid suspended matter, microbiological metabolism .The ultrafilteration will infiltrate micromolecules such as sugar , organic acid ,ａnd water ,ａnd trap most of the macromolecules substances ,so that the claricate and disinfected juice will be gained;The ultrafilteration process is short and can be carried out without filter aid, clarificant, and the cost of it is low, it is an economic way of clarifying the juice.
The zymin produced in the industry must be separated, refined ,vacuum evaporated, and solvent extracted ,which have many defects
The ultrafilteration is applied in the separation and concentration of the zymin ,it can be operated in the normal temperatures , overcome the effects heat does to the quality of the fermented products, abstract small molecular admixtures, and guarantees filtrates purity and quality; Filtering process does not change, the energy consumption and the cost compared with the traditional method are lower; The equipment running is simple, and is easy to operate and the control, thus it quickly became concentration separation craft the first choice of concentration separation such as biology medicine manufacture .
對(duì)進(jìn)水水質(zhì)要求
(1)渾濁度：＜5度
(2)顆粒：＜5µm
(3)懸浮物：＜3-5mg/L
(4)PH值：2-13
(5)溫度：＜45℃
(6)反清洗水：超濾水
on the quality of feed water
(1)Opacity:＜5 degree
(2)Granulation:＜5µm
(3)Suspension:＜3-5mg/L
(4)PH value:2-13
(5)Temperature:＜45℃
(6)Counter purge water: ultrafilteration
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